- HK RJ Tech
- dvr, cctv camera, dvr card, cctv tester, ip camera, wireless camera, mini spy camera.
- Address:Shing Yip Industrial Bldg No. 19-21 Shing Yip Street Kwun Tong Kowloon Hong Kong Hong Kong
- Shenzhen GXA Technology Development Co. Ltd
- Multifunctional CCTV Tester,PTZ High Speed Dome,CCTV Tester.
- Address:Lung Sum Avenue
- Suntech Instruments Co., Ltd.
- Thermal Imager,Video Inspection System,Gas Monitor,IAQ & Water A,Compressed Air,pH meter,Flue Gas Analysis,Pressure meter,Eddy Current Tester,People Counter,CCTV,Tailgate Detector.
- Address:Rm 1103, 11 / F Yue Fung Ind. Bldg. , 35-45 Chai Wan Kok St. , Tsuen Wan
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